Umm. Don't we have brick already? Of course brick's properties gotta be changed a bit to make it not almost completely like BMTL, but still.

Hum....Like some peoples say, we got alot of things in the same category, brick, stone, concrete, diamond, glass, I don't think we need another thing like that just for a couple of different details, I would prefer have a new element with brand new propreties and uses then rock.